Industrialized test method for PTT/PET self-crimping filament elasticity

A self-curling yarn and self-crimping technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials and the preparation of test samples, can solve the problem of sticking, inconvenient operation of single multifilament dry heat treatment, and large test volume and other problems, to achieve the effect of improving the accuracy of the experiment, saving the cost and time of the experiment, and reducing the number of experiments

Inactive Publication Date: 2015-12-23
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the test volume of a single filament test is large, and the dry heat treatment operation of a single multifilament is very inconvenient. During dry heat treatment, tension must be added to each filament, otherwise several adjacent multifilaments will be entangled in the movement caused by thermal shrinkage. stick

Method used

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  • Industrialized test method for PTT/PET self-crimping filament elasticity
  • Industrialized test method for PTT/PET self-crimping filament elasticity
  • Industrialized test method for PTT/PET self-crimping filament elasticity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Raw material: PTT / PET self-crimping filament, linear density 166.7dtex, number of filaments 64, component ratio 50 / 50.

[0055] (1) Wind the PTT / PET self-crimping filament into skeins by using the YG086C skein length measuring machine. 100cm. 10 bobbins are randomly selected from each batch of samples, and each bobbin is wound with 1 skein.

[0056] (2) Carry out dry heat treatment to the skein, the dry heat treatment process is: constant temperature treatment at 120° C. for 8 minutes.

[0057] (3) Carry out tensile test to the skein sample after heat treatment with a special skein stretching column, and the test obtains the load-elongation curve of the skein, see Figure 5 , Test conditions: clamping distance 100mm, tensile speed 100mm / min.

[0058] (4) On the tensile curve of the skein, take the stress 0.01cN / dtex as the starting point of the elastic elongation of the skein, and make a straight line parallel to the starting point and the breaking point of the skein...

Embodiment 2

[0061] Raw material: PTT / PET self-crimping filament, linear density 166.7dtex, number of filaments 48, component ratio 50 / 50.

[0062] Referring to Example 1, PTT / PET self-crimping filaments were made into skeins, heat treated and tensile tested.

[0063] The average value of elastic elongation of PTT / PET self-crimping skein is 65.91%, and the coefficient of variation is 4.70%.

Embodiment 3

[0065] Raw material: PTT / PET self-crimping filament, linear density 166.7dtex, number of filaments 72, component ratio 40 / 60.

[0066] Referring to Example 1, PTT / PET self-crimping filaments were made into skeins, heat treated and tensile tested.

[0067] The average value of elastic elongation of PTT / PET self-crimping skein is 60.72%, and the coefficient of variation is 2.45%.

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Abstract

The invention relates to a method of testing the elasticity of a PTT/PET (polytrimethylene terephthalate/polyethylene glycol terephthalate) self-crimping filament by using hank knotting thereof. The method is characterized by comprising the following steps: step 1, making self-crimping filament hank knotting; step2, performing dry heat treatment to the hank knotting; step3, carrying out hank knotting tensile testing; step 4, calculating the elastic elongation ratio. The method has the following beneficial effects: (1) the elastic property of the self-crimping filament can be accurately predicted in fabric at a fiber stage, thus the experimental cost and time are greatly reduced in contrast with a current method of testing the elasticity after trial-producing the fabric; (2) the operation is simple, and the test method is conveniently applied to industrial production; (3) the representativeness of the elastic elongation ratio of the hank knotting is greatly improved in contrast to that of a monofilament, thus the experimental times are reduced, and the experimental precision is improved.

Description

technical field [0001] The invention relates to the field of textile fiber testing, in particular to an industrialized testing method for the elasticity of PTT / PET side-by-side composite self-crimping filaments. Background technique [0002] Since the advent of PTT / PET crimped yarn, elastic textile fabrics have developed by leaps and bounds, and the production technology of bicomponent composite yarn has also developed by leaps and bounds. At present, PET and modified polyester side-by-side composite yarns are also similar. There are obvious differences in the elasticity and other properties of side-by-side composite yarns with different polymers, different cross-sectional shapes, and different component ratios. [0003] PTT / PET self-crimping yarn is made of side-by-side composite spinning of PTT (polytrimethylene terephthalate) and PET (polyethylene terephthalate). Due to the different shrinkage and modulus of the PTT and PET component materials in the fiber under the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N1/28
Inventor 王府梅杨竹丽王成罗胜利聂凤明
Owner DONGHUA UNIV
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